Hinge means for reversible windows

ABSTRACT

A HINGE MEANS FOR WINDOWS PERMITTING POSITIONING OF THE SASH IN VARIOUS POSITIONS AND ALSO REVERSAL OF THE SASH.   D R A W I N G

Much 20, 1973 KVASNES 3,721,044

HINGE MEANS FOR REVERSIBLE WINDOWS Fund Juno 5. 1971 2 Sheets-Sheet 1 9 /6 F l l- F 5 I 6 Z 77 5a 5 I Z 4 g 5.7 M 7 7/ 8 2w l 75 y S 70 17. L/ -K M WT 9-- HI I l l i /0- 20, 1973 KVASNES 3,21,% *1;

HINGE MEANS FOR REVERSIBLE WINDOWS r1104 June a. 1971 2 Sheets-Sheet 2 United States Patent U.S. Cl. 49-248 3 Claims ABSTRACT OF THE DISCLOSURE A hinge means for windows permitting positioning of the sash in various positions and also reversal of the sash.

The present invention relates to a hinge means for reversible windows of the type where a window sash in one end is pivotally mounted in a frame by means of two pivots arranged on the sash, said pivots running in guide grooves in the frame, and where the sash, on either side between sash and frame, is supported, when being displaced and pivoted, by two arms pivotally mounted in the frame, the free ends of said arms being articulated in spaced relation with a third arm which is pivotally attached to the sash.

This type of hinge means is known from the applicants Norwegian Pat. No. 107,278. The known hinge means has proved very satisfactory in practice; one disadvantage, however, is that the installation must be carried out in a special way in order to tension the hinge fittings. This also requires great precision in the separate link points. In the previously known means, it has been necessary to provide fittings for every cm. interval window height. This necessitated many hinge sizes.

The intention of the present invention is therefore to improve the known hinge means and, on the basis of the known hinge means described above, a hinge means is provided which is characterized in that, when the window is closed, the two frame arms are disposed one behind the other. A number of advantages are achieved in this manner. First it is possible to make the fitting much shorter with the same good balance as in the previously known fittings. In that the two frame arms are in parallel or substantially in parallel when the window is closed, with one arm disposed behind the other, it is obtained that the fitting retracts on closing the window without risk of locking when the window is again opened. With the new window fitting one and the same fitting may cover window height intervals of 40 cm. The new construction also eliminates the lower limit on the height of the finished window upon which the fitting is to be mounted. This has previously been a problem if the window was also to be well balanced and this being caused by the upper frame arm in the previous embodiments then becoming so short that this arm would lock on opening the window. This applies also to larger size windows if, with the known fittings, all the arms are shortened in order to make the fittings more manageable.

In order to avoid too great a thickness of the sash, it is advantageous according to the invention to form the pivots or guide shoes as crank pins mounted in the sash. Even though the frame arms, according to the invention are to be disposed one behind the other when the window is closed, it is not necessary to increase the thickness of the sash beyond the normal.

The frame arms may advantageously be rotatably mounted on a common plate secured to the frame, which significantly simplifies the installation of the fitting.

The hinge means may, according to the invention, advantageously be provided with a drop catch mounted 3,721,044 Patented Mar. 20, 1973 ice on the frame which engages with a pawl on the outer of the arms rotatably mounted to the frame. The stop mechanism thereby provided acts as a stop when ventilating and also as a safety measure for children which is significant especially in tall buildings. When the window is reversed, the stop mechanism may be used as a stopper when the window is to be cleaned. This also acts as a safety measure against burglary.

The invention is further described below with reference to the drawings where:

FIG. 1 shows in elevation a window having the new hinge means, viewed from the exterior,

FIG. 2 shows a section along the sectional line indicated in FIG. 1 with the window in ventilating position,

FIG. 3 shows a section of the upper left-hand corner of the window in FIG. 1,

FIG. 4 shows a perspective section of the upper lefthand corner of the sash in FIGS. 1 and 3, and

FIG. 5 shows a section as in FIG. 2, with the window sash in a further extended position.

In FIG. 1 a window is viewed from the exterior. The window consists of a frame 1 wherein the sash 2 is supported by means of the hinge means according to the invention. In order to provide room for the hinge means, grooves 3 and 4 are made in the two opposing, vertical frame sides. Guide grooves 5 are arranged on the inside of the vertical frame sides for the pivots secured to the sash.

The sash 2 is supported on either side in the frame 1 by means of an arm mechanism which is further described below. In the following description only the lefthand arm mechanism in FIG. 1 is described since the right-hand arm mechanism in FIG. 1 is correspondingly effected.

In the groove 4 in the frame 1, a plate 9 is countersunk. An arm 14 is pivotally mounted on the plate 9 by means of a pivot 11 and is connected to an arm 17 at its outer end by means of a pivot 16, the outer end of said arm 17 being pivotally connected at 18 with the sash 2. A section through the pivot 19, used in the righthand fitting, is shown in FIGS. 2 and 5. On the plate 9 an arm 12 is pivotally mounted by means of pivot 10, the outer end of said arm 12 being pivotally connected to the arm 17 by means of an indicated pivot 15.

A special pivot or guide shoe 6 is arranged at either corner at the top of the sash 2. In the embodiment example, the guide shoe is formed as a crank arm mounted in the sash 2 (see FIG. 4). The actual guide shoe 6a is formed by a portion projecting from the crank arm, as is particularly apparent in FIGS. 3 and 4. By means of the pivot 6b, the crank arm is rotatably mounted in a groove 8 in the sash 2, in this case via a fitting 7 which is screwed into the sash 2.

In FIG. 2, the window is shown in ventilating position, that is, almost completely closed. When the window is completely closed, the crank arm 6 lies in the groove 8, however, as will be clear from a study of FIGS. 2 and 5, it will eventually pivot upwardly about the pivot 6b when the window is opened and eventually reversed. During the opening process and eventually the reversing process, the window will at all times remain in balance.

The arm 12 is provided with an inwardly projecting hook 13 adapted to engage with the drop catch 20. The drop catch 20 is mounted on the plate 9 by means of two journals which guide the drop catch, the drop catch being provided with a corresponding elongated opening. Further, the drop catch 20 is provided with a short arm 21 projecting from the plate 9, said arm serving to facilitate the raising of the drop catch 20 when the lock is to be released. This locking mechanism acts in the following manner: When the window is opened, the hook 13 is automatically locked by the drop catch 20' and cannot move further. The fall catch 20 may be raised, and the window may then be pivoted outwardly and eventually reversed. Upon complete reversal of the window, the hook 13 again engages with the drop catch 20, whereby the window is locked in cleaning position. This locking mechanism may be arranged on one or both sides, and it is usually sufiicient to have such a locking mechanism on one side only, for example, as illustrated herein on the right-hand side.

Having described my invention, I claim:

1. Hinge means for reversible windows of the type including a window sash having one end thereof pivotably supported in a window frame, comprising; a pair of guide shoes mounted on said sash; guide grooves formed in said frame for movably receiving said guide shoes; first and second arms pivotably mounted on said frame on either side of said sash and extending therebetween, said arms supporting said sash during displacement and pivoting thereof; and a third arm pivotably mounted on said sash and being articulated in spaced relation with the free ends of said first and second arms, said first and second arms being substantially parallel and disposed one behind the other upon the window being in the closed position.

References Cited UNITED STATES PATENTS 1,193,101 8/1916 Wilson 49-249 2,799,903 7/ 1957 Alexander 49248 2,952,882 9/1960 Reynand 49249 KENNETH DOWNEY, Primary Examiner US. Cl. X.R. 49-252 

